Results 1 to 19 of 19

valve cover breather ....

This is a discussion on valve cover breather .... within the External Engine forums, part of the LSx Technical Help Section category; was wondering if anyone has a k&n part number or some info about a speed shop that sells a valve ...

  1. #1
    N/A nitrously aspirated stangslayer98's Avatar
    Join Date
    Nov 2005
    Location
    miami,fl
    Age
    36
    Posts
    497

    black
    1998 trans am

    valve cover breather ....

    was wondering if anyone has a k&n part number or some info about a speed shop that sells a valve cover breather for a 98 t/a ive gone to a local speed shop and an autozone and couldnt find a damn thing

  2. #2
    Slow'er'Ass Mr. Luos's Avatar
    Join Date
    Aug 2005
    Location
    Thornton, CO
    Posts
    23,785

    Red Tint Jewelcoat
    2008 Trailblazer SS

    Is this a race car??

    If not...I would recommend a catch can over breathers.

  3. #3
    Life in the Fast lane sunsetorangess's Avatar
    Join Date
    Aug 2005
    Location
    Bragg NC
    Posts
    2,835

    Met. Sunset Orange
    01 SS

    Quote Originally Posted by Mr. Luos View Post
    Is this a race car??

    If not...I would recommend a catch can over breathers.
    Yepp
    2001 SS, Its not the car its the Driver that matters....

  4. #4
    N/A nitrously aspirated stangslayer98's Avatar
    Join Date
    Nov 2005
    Location
    miami,fl
    Age
    36
    Posts
    497

    black
    1998 trans am

    its not a race car....catch can like the one's on the old school 350's had... know of any companies that make them for the ls engines

  5. #5
    Slow'er'Ass Mr. Luos's Avatar
    Join Date
    Aug 2005
    Location
    Thornton, CO
    Posts
    23,785

    Red Tint Jewelcoat
    2008 Trailblazer SS

    Quote Originally Posted by stangslayer98 View Post
    its not a race car....catch can like the one's on the old school 350's had... know of any companies that make them for the ls engines
    Thunder Racing has one.

  6. #6
    Moderator Firebirdjones's Avatar
    Join Date
    May 2006
    Location
    Arizona
    Posts
    12,552
    Alot of people do both a breather on the valve cover and a catch can on the PCV system.

  7. #7
    Moderator Firebirdjones's Avatar
    Join Date
    May 2006
    Location
    Arizona
    Posts
    12,552
    Check out www.pfyc.com for an LS1 breather. It's made to screw right into the stock valve cover and replace the stock rubber cap. Helps with crank case venting, something the LS motors struggle with.

    If you want an oil catch can too those can be found most anywhere, some sponsors here carry them. They work well for the PCV system to catch any oil that may be present before it enters the intake track,,,what seems to be another common LSx problem for some people.
    Hope that helps.

  8. #8
    N/A nitrously aspirated stangslayer98's Avatar
    Join Date
    Nov 2005
    Location
    miami,fl
    Age
    36
    Posts
    497

    black
    1998 trans am

    cool ill check those sites out..... going through some old magazines i found that speed inc has a helix mounted one too for $44 bucks looks nice and clean thanks for the help

  9. #9
    Senior Member GULLETT17's Avatar
    Join Date
    Oct 2007
    Location
    Muncie, IN
    Posts
    2,554

    00 TA PWTR, 98 VertTA NBM
    80 TA BLK, 80 Formula NBM

    Quote Originally Posted by Firebirdjones View Post
    Check out www.pfyc.com for an LS1 breather. It's made to screw right into the stock valve cover and replace the stock rubber cap. Helps with crank case venting, something the LS motors struggle with.
    ooo. . thats pretty damn cool

    ws6 store has a nice billet catch can for $90

  10. #10
    Moderator Firebirdjones's Avatar
    Join Date
    May 2006
    Location
    Arizona
    Posts
    12,552
    Quote Originally Posted by GULLETT17 View Post
    ooo. . thats pretty damn cool

    ws6 store has a nice billet catch can for $90
    I found that place through Sarge I think....I picked one up and like the quality and the idea of it scewing right in the OE cover without any issues.

    I'll check out the WS6 store for the oil catch. I have been contemplating the oil catch can. I haven't seen much oil at all in mine since I switched to the updated PCV valve a while back. But I still think the catch can may be in the future. Thanks.

  11. #11
    Junior Member
    Join Date
    Jan 2010
    Location
    Alabama
    Posts
    17

    Yellow
    2002 Trans Am CETA

    It looks like more people say you need a catch can with the pcv setup if you're ruuning a stock motor verses the breather cap if you're running a race type setup. I have a completely stock car and I am in the process of replacing the whole pcv valve and hose assembly. But I guess I'm having a problem with moisture because the oil dipstick is rusting and when I pull the filler cap the is alot of moisture on it too. I don't know if I need a catch can or not but would putting a breather cap on a stock motor do me more harm than good? Seems like it would help with letting the moisture out or would act as a vacuum leak? Sorry I don't know that much about the workings of this part of the engine and the more I read the more I get confused. I never seen a topic on any kind of forum have this many different opinions on how something should be done!

  12. #12
    Moderator Cutlass's Avatar
    Join Date
    Apr 2008
    Location
    Madison, WI
    Posts
    6,998

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    I vote for breather and catch can. But the moisture problem is probably caused by short trips.

  13. #13
    Junior Member
    Join Date
    Jan 2010
    Location
    Alabama
    Posts
    17

    Yellow
    2002 Trans Am CETA

    Will the breather cap let the condensation out and keep the moisture from being at the top of the dipstick and filler cap? Or does a stock motor need the stock filler cap on to keep the crankcase pressure right?

  14. #14
    The Bandit Wesman's Avatar
    Join Date
    Apr 2006
    Location
    NJ
    Posts
    4,033

    SGM
    1998 Trans Am WS6

    Quote Originally Posted by Robreynolds View Post
    Will the breather cap let the condensation out and keep the moisture from being at the top of the dipstick and filler cap? Or does a stock motor need the stock filler cap on to keep the crankcase pressure right?
    It lets moisture out, but the car needs to be run at operating temp for a pretty long time to ensure all the moisture has boiled off, since it has to evaporate up and out of the filter.

    Basically you are converting from a positive crankcase ventilation system to a breather ventilation system. The problem is these engines were designed for a PCV system, so its important that there is enough air movement throughout the engine to ensure proper ventilation of crankcase gasses, moisture, and pressure buildup.

    I had my car on the "breather" system for a short while while I was waiting to install my PS6 style valley cover and PCV system. I can tell you first hand its not a good system at all. You kill the life of your oil, it takes forever for the moisture to boil out of the crankcase, and every time you stop at a traffic light, you get the horrible stench of crankcase vapors in the car. Its enough to give you a headache.

    As others have said, your best bet is a catch can. The stock LS1 pcv system is not very good though, so its best to convert to the LS6 stye with the integrated fixed orfice as opposed to having a regular PCV valve. It cuts way down on the oil consumption while still providing adequate crankcase ventilation.

  15. #15
    Senior Member Z28boy2000's Avatar
    Join Date
    Jun 2008
    Location
    Rochester, NY Rochesterracing.com
    Posts
    1,276
    2000 Camaro B4C

    would it make sense to run both?

  16. #16
    The Bandit Wesman's Avatar
    Join Date
    Apr 2006
    Location
    NJ
    Posts
    4,033

    SGM
    1998 Trans Am WS6

    Quote Originally Posted by Z28boy2000 View Post
    would it make sense to run both?
    An open breather and a PCV system??

    No, you basically would be creating a small vacuum leak. Pirated air could be drawn from the breather filters, through the crankcase, and into the intake manifold.

  17. #17
    Member El Toro Loco's Avatar
    Join Date
    Jun 2008
    Location
    Harlingen, tx
    Posts
    757

    pewter
    2001 Trans AM WS6

    Quote Originally Posted by Mr. Luos View Post
    Is this a race car??

    If not...I would recommend a catch can over breathers.
    what if i drivethe car on the street and does see the track every once in a while, sorry im still confused on this system and how to modify or not to modify it

  18. #18
    Member El Toro Loco's Avatar
    Join Date
    Jun 2008
    Location
    Harlingen, tx
    Posts
    757

    pewter
    2001 Trans AM WS6

    so on a stock car a catch can is all u need?

  19. #19
    Moderator Firebirdjones's Avatar
    Join Date
    May 2006
    Location
    Arizona
    Posts
    12,552
    Quote Originally Posted by Cutlass View Post
    I vote for breather and catch can. But the moisture problem is probably caused by short trips.
    That's what I use on one of our 4th gens. Seems my 02 SS has had numerous oil leak issues over the years, with 3 rear main seals done under warranty. I did the last one myself and also found the gasket for the rear block plate leaking at that time as well, so that was replaced. Also had one valve cover seeping that I also fixed as well as some very minor seepage from the front timing cover that required a new seal.
    After all that was repaired, only to later find the rear main seeping again after several thousand miles......
    So I opted to run a breather element on the oil fill to help vent, as well as a catch can. It has seemed to subside the oil seepage.

    Not sure why this 02 was so horrible about oil seeping. My wifes LS1 is dry as a bone, with nothing but a catch can installed, no extra venting on that one. So I just left it be as is.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Wanted: Valve Cover Breather for LS1
    By WS6ICK in forum Parts Wanted / Trade
    Replies: 5
    Last Post: 06-20-2009, 02:55 PM
  2. oil valve breather..does it really benefit the car
    By Mustang Killa in forum External Engine
    Replies: 18
    Last Post: 03-07-2008, 11:30 PM
  3. Valve Cover Breather/ PCV Valve
    By lonewolf37 in forum General Help
    Replies: 0
    Last Post: 10-26-2007, 03:24 AM
  4. Valve Breather & PCV Oil Catch Can
    By Castle in forum External Engine
    Replies: 2
    Last Post: 09-04-2007, 09:05 AM
  5. Billet Valve Cover Breather
    By WHPLASH in forum Parts For Sale / Trade
    Replies: 0
    Last Post: 08-16-2007, 01:07 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •